How do Crocodiles See, Hear, and Smell?

Answers

Answer 1

Answer:
They are reptiles.. and reptiles are born from good habitats.. and they have ears so they can smell.. they also have keen eyes so they could see good... and they have tiny noses so they could smell well.

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Consider the following reversible reaction. 2H2O(g)<—>2H2(g)+O2(g) What is the equilibrium constant expression for the given system?

Answers

Answer : The equilibrium constant expression will be,

$k_(eq)=([H_2]^2[O_2])/([H_2O]^2)$

Explanation :

The given balanced chemical reaction is,

$2H_2O(g)\rightleftharpoons 2H_2(g)+O_2(g)$

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

The concentrations of pure solids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

So, the equilibrium constant expression will be,

$k_(eq)=([H_2]^2[O_2])/([H_2O]^2)$

Answer: D

Explanation:

When an electric kettle containing cold water is switched on, the water in it starts boiling after a few minutes. What is the source of the heat energy of the boiling water? (3 points)a. Mechanical energy from the power socket

b. Newly created energy that increased the total energy

c. Mechanical energy from the heating element in the kettle

d. Already existing energy that was present in some other form

Answers

Answer:

c. Mechanical energy from the heating element in the kettle

C is correct
Hope you do good

When matter is broken down into its simplest parts, it forms ? elements

Answers

Physically you can break matter into 'Particles' . Chemically you can get down to 'Molecules' . using Nuclear Radiation you can get down to the 'Atomic' structure but as Philhoon said Hydrogn would be the simplest 'element you can divide matter into. your welcome

Final answer:

Matter when broken down into its simplest parts forms elements. These are pure substances that everything in the universe is composed of. The smallest unit of an element is an atom, and when two or more atoms combine, a molecule is formed.

Explanation:

When matter is broken down into its simplest parts, it forms elements. Elements are the pure substances that everything in the universe is composed of and they cannot be broken down further using ordinary chemical reactions. Examples of elements include hydrogen, oxygen, carbon, nitrogen, calcium, and iron.

The smallest unit of an element is an atom, which is made up of subatomic particles like protons, electrons, and neutrons. When two or more atoms combine, a molecule is formed. Molecules are the smallest particles of matter while still retaining their chemical properties.

Elements in nature are unique with specific chemical and physical properties. Currently, 118 elements are known, but only 98 occur naturally. The remaining are synthesized in laboratories due to their instability.

Learn more about Elements here:

brainly.com/question/39478693

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List three evidences of physical and chemical change. ( If you know only one or two please write them anyways please)

Answers

Physical: ripping paper, braking a stick, cake batter mixing

Chemical: burning paper, spoiled milk, a penny turning green

In Hooke’s law, what does k represent? A. the distance the spring stretches

B. the elastic constant, a number that tells the relative strength of the spring

C. the constant of gravity

D. the amount of force acting on the spring

Answers

Answer: The correct answer based on the test is

B- the elastic constant, a number that tells the relative strength of the spring

D. the amount of force acting on the spring

Name the type of chemical reaction : CaO(s) + H2O(l) -----------Ca(OH)2(aq)

Answers

It is called Synthesis reaction

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if a star is 300 light years from earth how long does it take light from the star to reach earth/12327655/b8099c19?utm_source=registration